Hi Enrico,
the clean option is only of importance if you replace plugins within
an already installed rcp application. Sorry for having confused you.
cheers,
Juergen
On Thu, 25 Jun 2009, Enrico Piccinini wrote:
Well, tomorrow I'm going to try if the option clean works. At this moment I
can't
Have you ever tested such proposal?
I believe that doesn't works.
Doug Fajardo wrote:
>
> One approach might be to split the big, monolithic table into some number
> of hash buckets, where each 'bucket' is separate table. When doing a
> search, the program calculates the hash and accesses
Hello,
I would like to inform you about a problem encountered upon writing in a
sqlite database on a multi-core machine (Sun T2000).
Indeed, on T2000 systems, during endurance tests that induce a lot of
regular writings during several hours in a sqlite database (3.3 but also 3.6
sqlite
Matthew O'Keefe wrote:
> We wanted to post to the mailing list to see if there are any obvious,
> first-order things we can try to improve performance for such a large
> table.
The problem with slow inserts generally speaking lies in the problem of
cache miss.
Imagine that each new insert in
Hello.
I am trying to find words in a dictionary stored in sqlite, and trying
a near miss approach.
For that I tried an algorithm to create patterns corresponding to
Levenshtein distance of 1 (edit distance of 1).
That means, one adition, one remotion or one substitution.
For that, my script
Hi,
I guess the speed could significantly be improved,
if you leave out _car and _ar.
The inverted index which is basically (term,
blob_containing_all_document_ids_of_this_term),
cannot skip any of the alphabetically ordered terms if the first character is
variable.
At least that's my
I forgot to say about hash...
My personal choice will be MurmurHash2 64 bit function
http://murmurhash.googlepages.com/
http://en.wikipedia.org/wiki/MurmurHash2 - lots of implementations here
It's fast (even in managed impls), have good characteristics and free.
Don't use CRC64...
P.S. You
Why would it not work? It is just adding an extra top level to the
index. A tried and true method.
Kosenko Max wrote:
> Have you ever tested such proposal?
> I believe that doesn't works.
>
>
> Doug Fajardo wrote:
>
>> One approach might be to split the big, monolithic table into some
On Thu, June 25, 2009 at 4:46 PM, Matthew L. Creech wrote:
> cd /path/to/sqlite-3.6.15
> ./configure --prefix=/my/target/rootfs --host=arm-unknown-linux-gnueabi
> make install
>
Thanks for the help. Matthew. That was exactly what I needed.
With the configure --prefix option , the subsequent
Hi All,
I am working on an application. In my code nowhere I am explicitly setting
AutoCommit = False after any statement.
But i am getting "SQLite error: cannot commit transaction - SQL statements
in progress" this error.
Can anyone provide any input on this case in which all senerio we get
Manasi Save wrote:
> I am working on an application. In my code nowhere I am explicitly
> setting AutoCommit = False after any statement.
You set AutoCommit = False by executing BEGIN statement. You set it back
to True by executing COMMIT, END or ROLLBACK.
> But i am getting "SQLite error:
Alberto Simoes wrote:
> For that, my script receives a word (say, 'car') and generated all
> possible additions and remotions, and substitutions:
>
> Additions: _car c_ar ca_r car_
> Substitutions: _ar c_r ca_
> remotions: ar cr ca
>
> Then, the script constructs an SQL query:
>
> SELECT
Hi all,
my database has a table ExifPhoto with the fields GPSGeometry and Nearby.
For each row I need to Update field Nearby with all coordinates (in the
table) within a Distance of 1 degree of the coordinates in field
GPSGeometry.
The sqllite database has the spatial extension from SpatiaLite
John Stanton-3 wrote:
> Why would it not work? It is just adding an extra top level to the
> index. A tried and true method.
It will work. But won't give performance benefit. And from my undestanding
it will even slow down things.
You can place parts of index in different DB and on different
I have a column ("ID") in a table that is the primary key integer so it
should be an alias for ROWID. Is it safe to have a ROWID of 0?
-Shaun
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On Jun 26, 2009, at 12:13 PM, Shaun Seckman (Firaxis) wrote:
> I have a column ("ID") in a table that is the primary key integer so
> it
> should be an alias for ROWID. Is it safe to have a ROWID of 0?
A ROWID can have any value between -9223372036854775808 and
9223372036854775807,
On Jun 26, 2009, at 11:13 PM, Shaun Seckman (Firaxis) wrote:
> I have a column ("ID") in a table that is the primary key integer so
> it
> should be an alias for ROWID. Is it safe to have a ROWID of 0?
Yes.
>
>
>
>
> -Shaun
>
>
>
>
>
> ___
>
On Jun 26, 2009, at 12:22 PM, D. Richard Hipp wrote:
>
> On Jun 26, 2009, at 12:13 PM, Shaun Seckman (Firaxis) wrote:
>
>> I have a column ("ID") in a table that is the primary key integer
>> so it
>> should be an alias for ROWID. Is it safe to have a ROWID of 0?
>
>
> A ROWID can have any
On 26 Jun 2009, at 12:25pm, Alberto Simões wrote:
> one adition, one remotion or one substitution
I am always amazed at how well people use English. For your word
'remotion' you probably mean 'removal' or 'omission'. You have joined
the two possibilities together !
> Then, the script
Hello
On Fri, Jun 26, 2009 at 3:00 PM, Igor Tandetnik wrote:
> Alberto Simoes wrote:
>> For that, my script receives a word (say, 'car') and generated all
>> possible additions and remotions, and substitutions:
>>
>> Additions: _car c_ar ca_r car_
>> Substitutions: _ar c_r
On Fri, Jun 26, 2009 at 3:43 PM, Simon
Slavin wrote:
>
> On 26 Jun 2009, at 12:25pm, Alberto Simões wrote:
>
>> one adition, one remotion or one substitution
>
> I am always amazed at how well people use English. For your word
> 'remotion' you probably mean 'removal'
No, I admit I haven't tried this under SQLITE.
Whether this approach will help for the specific application will depend on
data usage patterns, which we haven't delved into for this application. Call me
simple: since the main issue is degraded performance with larger groupings of
data, it
Doug Fajardo wrote:
> No, I admit I haven't tried this under SQLITE.
>
> Whether this approach will help for the specific application will depend
> on data usage patterns, which we haven't delved into for this application.
> Call me simple: since the main issue is degraded performance with
Is there any way to find the version of SQlite3 database. eg. I have
test.DB file . I want to know which SQLite3 version its using ..eg 3.5.4
or 3.6.15?
Thanks,
-K
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On Fri, Jun 26, 2009 at 10:06:48AM -0700, Kosenko Max scratched on the wall:
>
>
> Doug Fajardo wrote:
> > No, I admit I haven't tried this under SQLITE.
> >
> > Whether this approach will help for the specific application will depend
> > on data usage patterns, which we haven't delved into for
Hi,
a database file does not have a version. You can access it with
different versions of the library.
AFAIK there is no way to determine what version of the library created
it or which version wrote to it last.
Martin
Kalyani Phadke wrote:
> Is there any way to find the version of SQlite3
Well, I understand idea in general and how it works. But as you have
described in second part of your letter - this won't help. Even if you will
create 100 tables that will save you just 1 step from 5-7 IO steps, but
won't make Cache hit ratio significantly higher. And I'm pretty sure that
even
The extremely simple app below leaks. What am I doing wrong?? Please help.
#include
#include
#include "stdio.h"
#include "sqlite3.h"
#include
#define TFQ_SQL_DB_NAME "/powerblock/datalog/TFQ-test.db"
#define _TABLE_NAME "sqltest"
int main(int argc, char *argv[])
{
char sql[1024];
On Jun 26, 2009, at 3:49 PM, Greg Morehead wrote:
> The extremely simple app below leaks. What am I doing wrong??
> Please help.
How do you know it is leaking memory? How are you measuring?
>
>
> #include
> #include
> #include "stdio.h"
> #include "sqlite3.h"
> #include
>
> #define
I took only a quick look, but it seems to me that sqlite3_free is only
being called if there is an error.
See http://sqlite.org/c3ref/exec.html
g
-Original Message-
From: sqlite-users-boun...@sqlite.org
[mailto:sqlite-users-boun...@sqlite.org] On Behalf Of Greg Morehead
Sent: Friday,
I'm watching the heap from the eclipse IDE which connects to the remote
debugging qconn service on the target.
I've included a screen shot from the last run of the code I included. This was
over 1 minute period where onlky 2782 records were written!
The problem is much worse on the much
Based on the documentation in the link you sent I should only need to call free
if there was an error message.
But, since there is no harm in calling sqlite3_free on a null pointer I moved
it out of the if statement. It had no impact, still leaking like faucet.
-Original Message-
FYI. I replaced the sqlite3_exec call with sqlite3_prepare_v2, sqlite3_step,
sqlite3_finalize.
Same results.
-Original Message-
From: sqlite-users-boun...@sqlite.org
[mailto:sqlite-users-boun...@sqlite.org]on Behalf Of Greg Morehead
Sent: Friday, June 26, 2009 4:21 PM
To: General
At 13:25 26/06/2009, you wrote:
´¯¯¯
>I am trying to find words in a dictionary stored in sqlite, and trying
>a near miss approach.
>For that I tried an algorithm to create patterns corresponding to
>Levenshtein distance of 1 (edit distance of 1).
>That means, one adition, one remotion or one
If I close then reopen the database all my memory is recovered.
Is this by design??? I was intending on keeping a connection open most of time.
-Original Message-
From: sqlite-users-boun...@sqlite.org
[mailto:sqlite-users-boun...@sqlite.org]on Behalf Of Greg Morehead
Sent: Friday,
On Fri, 26 Jun 2009 17:07:16 -0400, "Greg Morehead"
wrote:
>
>If I close then reopen the database all my memory is recovered.
>
>Is this by design???
Yes, what you see is probably the page cache.
>I was intending on keeping a connection open most of time.
On Fri, Jun 26, 2009 at 05:07:16PM -0400, Greg Morehead scratched on the wall:
>
> If I close then reopen the database all my memory is recovered.
>
> Is this by design??? I was intending on keeping a connection open most of
> time.
Are you sure you're not looking at the page cache?
Hello.
I'm using SQLite with a VB wrapper (dhSQLite) for VB6.
The following SQL string works fine for putting together a recordset where
the DATE field contains only the date of the last day of each month.
SQLString = "SELECT date(Date,'start of month','+1 month','-1 day') as
Date, " & _
> Hello.
>
> I'm using SQLite with a VB wrapper (dhSQLite) for VB6.
>
> The following SQL string works fine for putting together a recordset where
> the DATE field contains only the date of the last day of each month.
>
>
> SQLString = "SELECT date(Date,'start of month','+1 month','-1
Alberto Simoes wrote:
> On Fri, Jun 26, 2009 at 3:00 PM, Igor Tandetnik
> wrote:
>> Alberto Simoes wrote:
>>> SELECT DISTINCT(word) FROM dict WHERE word = "ar" OR word = "ca" OR
>>> word LIKE "_car" OR word LIKE "c_r" OR word = "cr" OR word LIKE
>>> "_ar" OR word LIKE "ca_r"
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